Add ref back

Author: savannahostrowski

peps/pep-0830.rst

@@ -422,7 +422,8 @@ JIT compilers (V8, LuaJIT, .NET CoreCLR, Julia, LLVM's ORC JIT), which
 typically require hundreds to thousands of lines of code to implement custom
 DWARF ``.eh_frame`` generation, GDB JIT interface support
 (``__jit_debug_register_code``), and per-unwinder registration APIs
-(``_U_dyn_register``, ``__register_frame``).
+(``_U_dyn_register``, ``__register_frame``).  See issue `#126910`_ for
+further discussion of frame pointers and the JIT.
 
 The Ecosystem Has Already Adopted Frame Pointers
 ------------------------------------------------